EP2355348A4 - Elastic wave filter device - Google Patents

Elastic wave filter device

Info

Publication number
EP2355348A4
EP2355348A4 EP09828746A EP09828746A EP2355348A4 EP 2355348 A4 EP2355348 A4 EP 2355348A4 EP 09828746 A EP09828746 A EP 09828746A EP 09828746 A EP09828746 A EP 09828746A EP 2355348 A4 EP2355348 A4 EP 2355348A4
Authority
EP
European Patent Office
Prior art keywords
filter device
wave filter
elastic wave
elastic
wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09828746A
Other languages
German (de)
French (fr)
Other versions
EP2355348A1 (en
EP2355348B1 (en
Inventor
Yuichi Takamine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of EP2355348A1 publication Critical patent/EP2355348A1/en
Publication of EP2355348A4 publication Critical patent/EP2355348A4/en
Application granted granted Critical
Publication of EP2355348B1 publication Critical patent/EP2355348B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
    • H03H9/0052—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded
    • H03H9/0061—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on opposite sides of the tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
    • H03H9/0066—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically parallel
    • H03H9/0071—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically parallel the balanced terminals being on the same side of the tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/0222—Details of interface-acoustic, boundary, pseudo-acoustic or Stonely wave devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
    • H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
    • H03H9/173—Air-gaps
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/703—Networks using bulk acoustic wave devices
    • H03H9/706—Duplexers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves
    • H03H9/725—Duplexers
EP09828746.9A 2008-11-25 2009-07-29 Elastic wave filter device Active EP2355348B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008299490 2008-11-25
PCT/JP2009/003568 WO2010061496A1 (en) 2008-11-25 2009-07-29 Elastic wave filter device

Publications (3)

Publication Number Publication Date
EP2355348A1 EP2355348A1 (en) 2011-08-10
EP2355348A4 true EP2355348A4 (en) 2012-06-20
EP2355348B1 EP2355348B1 (en) 2018-03-07

Family

ID=42225388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09828746.9A Active EP2355348B1 (en) 2008-11-25 2009-07-29 Elastic wave filter device

Country Status (5)

Country Link
US (1) US8106725B2 (en)
EP (1) EP2355348B1 (en)
JP (1) JP5018894B2 (en)
CN (1) CN102197593B (en)
WO (1) WO2010061496A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013168692A (en) * 2010-06-04 2013-08-29 Murata Mfg Co Ltd Acoustic wave demultiplexer
DE102010046794B4 (en) * 2010-09-28 2015-07-16 Epcos Ag Acoustic waves filter with reduced nonlinearities
WO2013065488A1 (en) * 2011-10-31 2013-05-10 株式会社村田製作所 Film bulk acoustic resonator, filter device, and duplexer
WO2015190178A1 (en) 2014-06-10 2015-12-17 株式会社村田製作所 Elastic wave device
KR102050228B1 (en) * 2016-08-25 2019-11-29 가부시키가이샤 무라타 세이사쿠쇼 A seismic device
JP7008633B2 (en) 2016-10-13 2022-01-25 株式会社村田製作所 SAW filter device
WO2021131125A1 (en) * 2019-12-27 2021-07-01 株式会社村田製作所 High-frequency module and communication device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040000842A1 (en) * 2002-03-18 2004-01-01 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communication apparatus incorporating the same
WO2008067793A1 (en) * 2006-12-05 2008-06-12 Epcos Ag Dms filter with improved matching
DE102007008110A1 (en) * 2007-02-19 2008-08-21 Epcos Ag Filter working with acoustic waves

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000349589A (en) * 1999-06-01 2000-12-15 Mitsubishi Electric Corp Surface acoustic wave filter
JP3534080B2 (en) * 2001-03-23 2004-06-07 株式会社村田製作所 Surface acoustic wave filter device
JP3826816B2 (en) * 2001-08-29 2006-09-27 株式会社村田製作所 Surface acoustic wave device
JP2004260402A (en) * 2003-02-25 2004-09-16 Murata Mfg Co Ltd Surface acoustic wave device and communication device having it
JP4230347B2 (en) * 2003-12-19 2009-02-25 富士通メディアデバイス株式会社 Surface acoustic wave filter
DE102006010752B4 (en) * 2006-03-08 2013-10-31 Epcos Ag DMS filter with interconnected resonators
JP5135763B2 (en) 2006-11-01 2013-02-06 株式会社村田製作所 Surface acoustic wave filter device and duplexer
JPWO2008108113A1 (en) * 2007-03-01 2010-06-10 株式会社村田製作所 Elastic wave filter device and duplexer
JP5013227B2 (en) * 2007-04-11 2012-08-29 株式会社村田製作所 Piezoelectric thin film filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040000842A1 (en) * 2002-03-18 2004-01-01 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communication apparatus incorporating the same
WO2008067793A1 (en) * 2006-12-05 2008-06-12 Epcos Ag Dms filter with improved matching
DE102007008110A1 (en) * 2007-02-19 2008-08-21 Epcos Ag Filter working with acoustic waves

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
COLIN K CAMPBELL ED - CAMPBELL C K: "Lumped Equivalent Circuit Parameters for One-Port Resonator", 1 January 1998, SURFACE ACOUSTIC WAVE DEVICES FOR MOBILE AND WIRELESS COMMUNICATIONS, SAN DIEGO, CA : ACADEMIC PRESS, US, PAGE(S) 288 - 291, ISBN: 978-0-12-157340-9, XP002607517 *
See also references of WO2010061496A1 *

Also Published As

Publication number Publication date
JP5018894B2 (en) 2012-09-05
US8106725B2 (en) 2012-01-31
EP2355348A1 (en) 2011-08-10
US20110187479A1 (en) 2011-08-04
JPWO2010061496A1 (en) 2012-04-19
CN102197593A (en) 2011-09-21
CN102197593B (en) 2014-10-08
EP2355348B1 (en) 2018-03-07
WO2010061496A1 (en) 2010-06-03

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